Puppet-valve for internal-combustion engines.



S. CURRAN.

PUPPET VALVE FOR INTERNAL COMBUSTION ENGINES.

APPLIGATION FILED JUNE13,1913.

1,129,555, Patented Feb. 23, 1915.

f/vvz/v 70/1 ST /VLEYLZ/RRAN.

UNITED, "STATES PATENT OFFICE. STANLEY CURRAN, F VANCOUVR, :KITISH COLUl IBIA, CANADA, LSSIGNDB 61' ONE- HAI JF TO DANIEL '.I.HOZ A, 01 VANCOUVER, BRITISH COLUMBIA, CANADA.

v rurrmpvanvn iron To all whom it may concern: Be it known that -I-, STANLEY Column, :1

subject of'the King of GreatBritaih, resid-.

ing in the city of Vancouver, in the Province of, British Columbia, Canada, have invented certain new and'u'sefnl- Improvements in Puppet Valves for Internal- Combustion Engines, of which the following is a specification. 1-

My invention relates to improvementsin puppetvalves for internal combustion .en-

'nes, and the object of invention'is to evise a puppet valve 'which shall have a' combined reciprocating and rotary motion, instead of the simple reciprocating mot on in use at the present time,-thereby causing I the faces of the valve and valveseat to wear more evenly and time keeping the'valves tight much longerj t'han is possible with va ves having only a reciprocating motion. I attain this object by the construction illustrated in the accompanying drawings in which-- i 5 Figure 1 is a vertical cross section of the valve casing of a typical internal combus tion engine, with my puppet valve in position. Fig. 2 is an enlarged detail view ofthe lower end of the valve stem and tappet- Fig.

3 is a perspective view of the tappet.

Similar letters of reference refer to similar parts throughout the several views.

A is the valve. Bis the valve seat.

C is the valve stem. D is the valve spring.

E is a cupped washer engaging over the stern C to carry the lower end .of the.

. in its head to engage the lower portion of 'the cotter F, and thus transmit the rotary motion of the tappet to the valve stem. i J and K are lock nuts for locking I in mrnniurscomnus'rron Specification of Letters Patent.

.sible with the ordinary ENGINES.

lfatentedFeb'. 23, 1915;

Application and June 13,1913; Sci-la! Ij'o. 71am.

D bears and which allows the spring to turn with the ball race on the balls at the same timeas the valvestem so as to eliminate tlie friction of the spring dueito the rotary mo-; I

tion of the tappet.

. v. 30 L is a tappet, working through the crank;-

case in the usual manner, and having-on its:

-up r end the screw I locked to itby-the loc nuts JK, and on itsY-lower end thei-f disk .M. This disk M is normall as to its lower face with the cam bl, which is driven by the cam shaft 0, the rotary'n otion of the cam shaft being converted into a re ciprocating motion-of the valve in the ordi nary. manner by the tappet L. Instead, 7o

however, of placing the cam Non the vertical center line of the valve, referring now more particularly to Fi 2 as is done"at the .presenttime, and t ereby obtaining a simple reciprocating motion, I A one side of the vertical center line and out toward the each time t e cam raises the tappet, it will also turn it at the same time, from which it will be I valve by'the connection of the valve stem to 86 the tappet by means of the cotter F, rovision for the easy turning'of the stem ing made by allowing thekpring D to turn with the ball race at the same time'as the stem, as hereinbefore mentioned.

' It will be seen, therefore, that I have devised a puppet valve for internal combustion engines which shall have reciprocating, and

at the same time, rotary motion, whereby the'face. of the valve and its seat shall be subjectedto a more even wear than is p0..-

reciprocating style of valve, thus lengthening the life of the valve and at the same time insuring that it will remain tight much longer than will the present form of reciprocating puppet valves. What I claim as my invention is- A 1. 'In a 'puppet valve vof the class 'described, the combination with the .valve 0113- 195 ing and a valve stem having a slot cut in ita lower end, a tappet member having a slotat engaged as place it on 75 eriphery of my disk, so that i seen that, while still retain 80 mg the reciprocating motion necessary to its upper end opposite the slot of the'valve place.

stein, acotter engaging the opposing slots,

P is a movable ball race of any suitable 55 type on which the upper end of the spring and a suitably drivencam designed to en- In a puppet valve of the class elb-ed, Um; combination with the valve casg, 1 valve and a valve stem having a. slot wt in the im've-r' end. thereof, a Lavppeb neid stumble bearings, a set screw threaded the upper and of the I tappet and haw .g; a. cross slot opposing the 510 of [he Eve stem, a cutter engaging the opposing andlneans for imparting a simultanemsly vertical and. rotary movement to the tiappet, as and far the purpose specified.

3; In a puppet valve of the class degb ib d the. rwnnination with a valve casing, a valve am} a, valve stem having a slot out in the iewer end thereof, a tappet held in suitabie bearings, a set screw threaded inta the upper and of the tappet and having a cross slotopposing the .slot of the valve stem, a-cotter engaging the opposite,- slats, and a suitably driven. cam de igned to engage the lower emi sf tappet to impart a simultanecusly mtzsry and vertical move- -ment mm-em as and for the purposes specifled.

Dat 1 1% Vancouver, B. (3., this 26th day of M21 1M3.

STANLEY CURRAN'.

Witnesses 3 JAMES TAYLOR, 

